Shouldn't the starter booster (if that's what it is) be mounted at the rear of the car instead? Otherwise, you'll get some really impressive reverse acceleration...
Yes, I would probably install the transport aircraft booster more towards the rear, behind the Polo, because then you have a lot of space in the front for modifications .
Red = Power. If that's the case, then I'll ask a question: What color was used in the Cupra? The ASZ hose is already colored a fiery red.